Lamp-socket.



Faente'd Nov. 25, |902;

(No Modal) l @HHH .Nuages 4 @'MVL/ UNITED STATES PATENT OFFICE.

PHILIP H. FIELDING, OF NEW YORK, N. Y.

SPECIFICATION forming part of Letters Patent No.` 714,292, datedNovember 25, 1902.

Application le. February 20, 1.902. Serial No. 94,910. (No model.)

To all whom it may concern:

Be it known that I, PHILIP'H. FIELDING, a citizen of the UnitedStates,residing at the city of New York, in the borough of Manhattan andState of New York, have invented certain new and useful lmprovementsinLamp-Sockets, of which the following is a ful1,'clear, and exactdescription.

This invention relates to incandescentlamp sockets, the object being toprovide a socket adapted for out-of-doors or interior service,

and to that end it will be waterproof, also to provide a socket whichcan be quickly wired and assembled, which will relieve thebinding-screws of all strain when the socket and lamp are suspended,which can be manufactured at low cost, and which is adapted either for asuspended or a bracket lamp.

The novel construction will be fully described in connection with theaccompanying drawings, in which- Figure 1 is a side elevation with apart in section of the improved socket. side elevation of the interiorremovable portion of the socket. ,Fig. 3 is a horizontal section of thecase of the socket. Fig. 4 is a plan of the device shown in Fig. 2; andFig.

- 5 is a section of theupper portion ofthe a contracted neck a'.

socket, showing the parts adapting it for use l on a bracket.

The socket consists,in general,`of two partsone, the inclosing case A,and the other, B,.

supporting the contacts-the two parts being independent and movable withrespect to each other. The part A is of porcelain and bell-shaped,having a cylindrical body a and teriorly at the zone where the neckjoins the cylindrical portion are two dialnetricallyplaced notches orshoulders a8. The lower edge of the bell is flared to shed moisture. Thepart B consists of a disk b, of porcelain,

fitting loosely into the cylindrical part a of Fig. 2 is a The neck hasa centrallpassage 0.2 to admit the conductors, and in- A nected with theshell and center contact, re-

spectively, lead upward through notches in the edge of the disk onopposite sides of the projection b and carry at their upper endsbinding-screws d2.

To assemble the socket, the electrical conductors c e are passed fromabove through the opening a2 and brought out below the bell. The ends ofthe conductors are then passed in opposite directions through the holesb2 in the part b" and secured, respectively, by the binding-screws d2.Then by pulling upward on the cord the part B is carried into the part Auntil it is stopped by the contracted neck of part A. Then by slightlyrotating the parts upon each other the lugs d ld iind the notches a3 andpass into them, thus locking the parts A and B against rotary motionwith respect to each other.

For an interior suspended lamp the socket is now complete. The weightot' the socket at the end of the cordiwill hold the parts in terlocked,so that by grasping the bell in the hand a lamp can be screwed intoplace without twisting the part B'. By passing the cord through theopenings in the part b it will be seen that the strain of the weight ofthe lamp or any pulling on the lamp will not be felt by thebinding-screws, and the connection at these points will not be impaired.

When the lamp is to be used outside,'or in any location where it will besubjected to moisture, the passage c2 in the top of the bell is to bepluggedand made moisture-proof by introducing cement a3. Likewise, toprevent moisture from reaching the contacts from the lower end cementmay be filled in between the shell c and the bell A.- The cement in bothplaces can be easily removed when necessary by the application of heat.

To adapt the socket for' rigid attachment to a bracket or other fixture,the passage a2 is made to receive a boss f, (see Fig. 5,) having athreaded part to screw onto the fixture and a squared part j" to preventit from turning. It is clamped in place by a nut f2.

Hence a bell constructedas shown in Fig. 1 is adapted either for asuspended or a fixed lamp.

The means for obtaining the free interlocking connection between theparts A and B may be varied. For instance, the projection IOO b mightengage with the notches instead of the lugs d and d', or lugs on thepart A might enter notches in the disk b, so that my iuvention is notlimited in this respect. It is also noted that the invention is notlimited to the Edison type of socket shown, since any socket requiringthe lamp to be screwed or twisted into place could be used. Although akeyless socket is described, it is evident that the main features of theinvention relate as well to key-sockets.

Having described my invention, I claim- An incandescent-lamp socketconsisting of a block of insulating material carrying the metallicbinding and contact devices and having an engaging shoulder and aconductingcord connected directly therewith, in combi; nation with apetticoat or casing of insulating material adapted to entirely coversaid block and metallic parts, said casing having an opening throughwhich said cord passes and having a shoulder adapted to engage with theshoulder on the part to which the cord is secured, to prevent relativerotation of the casing and parts which it covers.

In Witness whereof 'I subscribe my signature in presence of twowitnesses.

PHILIP H. FIELDING.

